rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P2570
rcu: 	(detected by 0, t=10503 jiffies, g=272829, q=4517)
syz-executor.5  R  running task    28128  2570   6920 0x00000006
Call Trace:
 <IRQ>
 sched_show_task.cold+0x332/0x396 kernel/sched/core.c:5339
 rcu_print_detail_task_stall_rnp+0xc6/0xff kernel/rcu/tree_plugin.h:627
 rcu_print_detail_task_stall kernel/rcu/tree_plugin.h:640 [inline]
 print_other_cpu_stall kernel/rcu/tree.c:1418 [inline]
 check_cpu_stall kernel/rcu/tree.c:1557 [inline]
 __rcu_pending kernel/rcu/tree.c:3293 [inline]
 rcu_pending kernel/rcu/tree.c:3336 [inline]
 rcu_check_callbacks.cold+0x859/0xe19 kernel/rcu/tree.c:2682
 update_process_times+0x2a/0x70 kernel/time/timer.c:1638
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168
 tick_sched_timer+0xfc/0x290 kernel/time/tick-sched.c:1278
 __run_hrtimer kernel/time/hrtimer.c:1401 [inline]
 __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1463
 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1521
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:ipv6_addr_equal include/net/ipv6.h:521 [inline]
RIP: 0010:__sctp_v6_cmp_addr+0x27d/0x520 net/sctp/ipv6.c:603
Code: 02 00 00 48 8d 7b 10 4c 33 75 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 43 02 00 00 48 8d 7d 10 <4c> 8b 63 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80
RSP: 0018:ffff88820122f6f8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: ffff888042fa8f20 RCX: ffffc9001053d000
RDX: 1ffff110085f51e6 RSI: ffffffff86bbc634 RDI: ffff88820122f7e8
RBP: ffff88820122f7d8 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000002 R11: 000000006dbe75be R12: 000000000000000a
R13: ffff888042fa8f28 R14: 0000000000000000 R15: 0000000000000001
 sctp_v6_cmp_addr+0x1a/0xd0 net/sctp/ipv6.c:621
 sctp_bind_addr_state+0x14b/0x330 net/sctp/bind_addr.c:393
 sctp_copy_local_addr_list+0x217/0x4e0 net/sctp/protocol.c:177
 sctp_copy_one_addr net/sctp/bind_addr.c:449 [inline]
 sctp_bind_addr_copy+0xde/0x470 net/sctp/bind_addr.c:71
 sctp_sendmsg_new_asoc+0x367/0x1040 net/sctp/socket.c:1745
 sctp_sendmsg+0x10f9/0x1530 net/sctp/socket.c:2105
 inet_sendmsg+0x132/0x5a0 net/ipv4/af_inet.c:798
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:632
 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115
 __sys_sendmsg net/socket.c:2153 [inline]
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45cb29
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f0e235dbc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000502520 RCX: 000000000045cb29
RDX: 0000000000000060 RSI: 00000000200008c0 RDI: 0000000000000008
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000a3a R14: 00000000004cd20e R15: 00007f0e235dc6d4
syz-executor.5  R  running task    28128  2570   6920 0x8000000e
Call Trace:
 <IRQ>
 sched_show_task.cold+0x332/0x396 kernel/sched/core.c:5339
 rcu_print_detail_task_stall_rnp+0xc6/0xff kernel/rcu/tree_plugin.h:627
 rcu_print_detail_task_stall kernel/rcu/tree_plugin.h:642 [inline]
 print_other_cpu_stall kernel/rcu/tree.c:1418 [inline]
 check_cpu_stall kernel/rcu/tree.c:1557 [inline]
 __rcu_pending kernel/rcu/tree.c:3293 [inline]
 rcu_pending kernel/rcu/tree.c:3336 [inline]
 rcu_check_callbacks.cold+0x8b7/0xe19 kernel/rcu/tree.c:2682
 update_process_times+0x2a/0x70 kernel/time/timer.c:1638
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168
 tick_sched_timer+0xfc/0x290 kernel/time/tick-sched.c:1278
 __run_hrtimer kernel/time/hrtimer.c:1401 [inline]
 __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1463
 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1521
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
 </IRQ>
RIP: 0010:ipv6_addr_equal include/net/ipv6.h:521 [inline]
RIP: 0010:__sctp_v6_cmp_addr+0x27d/0x520 net/sctp/ipv6.c:603
Code: 02 00 00 48 8d 7b 10 4c 33 75 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 43 02 00 00 48 8d 7d 10 <4c> 8b 63 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80
RSP: 0018:ffff88820122f6f8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: ffff888042fa8f20 RCX: ffffc9001053d000
RDX: 1ffff110085f51e6 RSI: ffffffff86bbc634 RDI: ffff88820122f7e8
RBP: ffff88820122f7d8 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000002 R11: 000000006dbe75be R12: 000000000000000a
R13: ffff888042fa8f28 R14: 0000000000000000 R15: 0000000000000001
 sctp_v6_cmp_addr+0x1a/0xd0 net/sctp/ipv6.c:621
 sctp_bind_addr_state+0x14b/0x330 net/sctp/bind_addr.c:393
 sctp_copy_local_addr_list+0x217/0x4e0 net/sctp/protocol.c:177
 sctp_copy_one_addr net/sctp/bind_addr.c:449 [inline]
 sctp_bind_addr_copy+0xde/0x470 net/sctp/bind_addr.c:71
 sctp_sendmsg_new_asoc+0x367/0x1040 net/sctp/socket.c:1745
 sctp_sendmsg+0x10f9/0x1530 net/sctp/socket.c:2105
 inet_sendmsg+0x132/0x5a0 net/ipv4/af_inet.c:798
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:632
 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115
 __sys_sendmsg net/socket.c:2153 [inline]
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45cb29
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f0e235dbc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000502520 RCX: 000000000045cb29
RDX: 0000000000000060 RSI: 00000000200008c0 RDI: 0000000000000008
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000a3a R14: 00000000004cd20e R15: 00007f0e235dc6d4
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P2570 } 10585 jiffies s: 15601 root: 0x0/T
rcu: blocking rcu_node structures: